When two-syllable prefixes form a three-syllable word, there is usually primary stress on the first syllable, followed by an unstressed syllable and secondary stress on the third syllable.

• 如果双音节的前缀成为一个三音节单词的一部分，强重音通常放在第一个音节，接着第二个音节是非重音，次重音则放在第三个音节。